Q.2 log 8 + 3 log 27 - 3 log 9 = …req banh, klo ga sapi V:

Q.2 log 8 + 3 log 27 – 3 log 9 = …req banh, klo ga sapi V:

2 log 8 + 3 log 27 – 3 log 9 = …

= ²log 2³ + ³log 3³ – ³log 3²

= (1 × 3) + (1 × 3) – (1 × 2)

= 3 + 3 – 2

= 6 – 2

= 4

$sf ••$

$rm ^{2} log : 8 + {}^{3} log : 27 - {}^{3} log : 9$

$rm = : ^{2} log : {2}^{3} + {}^{3} log : {3}^{3} -: ^3log:3^2$

$rm = : 3 cdot : ^{2} log : {2} + 3cdot : {}^{3} log : {3}- 3cdot:^3log:3$

$rm = : 2 cdot : cancel{ ^{2} log : {2} } + 3cdot : cancel{ {}^{3} log : {3}}- 2cdot:cancel{^3log:3}$

$rm = 3+ 3 - 2$

$rm = 3 + 1$

$rm = 4$